Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1991RANGER 2WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINEINTAKE MANIFOLDALL ENGINE TORQUE SPECIFICATIONS
1991 Ford Ranger 2WD L4-140 2.3L SOHC
All Engine Torque Specifications
1991 Ford Ranger 2WD L4-140 2.3L SOHCSECTION All Engine Torque Specifications
| Auxiliary Shaft Gear Bolt | 38-54 Newton Meter (Nm) |
| Auxiliary Shaft Thrust Plate Bolt | 8-12 Newton Meter (Nm) |
| Belt Tensioner (Timing Pivot Bolt) | 38-54 Newton Meter (Nm) |
| Belt Tensioner (Timing) Adjusting Bolt | 19-29 Newton Meter (Nm) |
| Camshaft Gear Bolt | 68-96 Newton Meter (Nm) |
| Camshaft Thrust Plate Bolt | 8-12 Newton Meter (Nm) |
| Carburetor to Spacer Stud | 10-20 Newton Meter (Nm) |
| Carburetor Spacer Nut | 14-19 Newton Meter (Nm) |
| Carburetor Spacer to Manifold Bolt | 19-28 Newton Meter (Nm) |
| Connecting Rod Nut | - Torque in sequence in two steps: Step 1: 34-41 Nm (25-30 ft-lb). Step 2: 41-49 Nm (30-36 ft-lb). |
| Crankshaft Pulley Bolt | 140-180 Newton Meter (Nm) |
| Cylinder Head Bolt | - Torque cylinder head bolts in sequence in 3 steps: Step 1: 70 Nm (51 lb ft). Step 2: 70 Nm (51 lb ft). Step 3: Turn an additional 90-100 Degrees. |
| Distributor Clamp Bolt | 19-28 Newton Meter (Nm) |
| Distributor Vacuum Tube to Manifold Adapter | 7-11 Newton Meter (Nm) |
| Exhaust Manifold to Cylinder Head Bolt, Stud or Nut | - Torque in sequence in two steps: Step 1: 20-23 Nm (178-204 in-lb). Step 2: 27-41 Nm (20-30 ft-lb). |
| Flywheel to Crankshaft Bolt | 73-87 Newton Meter (Nm) |
| Fuel Pump to Cylinder Block | 19-28 Newton Meter (Nm) |
| Intake Manifold to Cylinder Head Bolt/Nut | - Torque in sequence in two steps: Step 1: 7.9 Nm (5-7 ft-lb). Step 2: 19-28 Nm (14-21 ft-lb). |
| Main Bearing Cap Bolt | - Torque in sequence in two steps: Step 1: 68-81 Nm (50-60 ft-lb). Step 2: 102-115 Nm (75-85 ft-lb). |
| Oil Pressure Sending Wire to Block | 11-24 Newton Meter (Nm) |
| Oil Pump Pickup Tube to Pump | 19-29 Newton Meter (Nm) |
| Oil Pump to Block | 19-29 Newton Meter (Nm) |
| Oil Pan Drain Plug to Pan | 21-33 Newton Meter (Nm) |
| Oil Pan to Block | 11-13.5 Newton Meter (Nm) |
| Oil Filter Insert to Cylinder Block | 28-35 Newton Meter (Nm) |
| Oil Filter to Engine | 10.7-14.1 Newton Meter (Nm) 1/2 turn after gasket contacts surface - oil gasket. |
| Rocker Arm Cover to Cylinder Head | 7-11 Newton Meter (Nm) |
| Spark Plug to Cylinder Head | 7-14 Newton Meter (Nm) |
| Temperature Sending Unit to Block | 11-24 Newton Meter (Nm) |
| Water Jacket Drain Plug to Block | 32-37 Newton Meter (Nm) |
| Water Pump to Block Bolt | 19-29 Newton Meter (Nm) |
| EGR Valve to Spacer Bolt | 19-29 Newton Meter (Nm) |
| EGR Tube to Exhaust Manifold Conn. | 25-35 Newton Meter (Nm) |
| EGR Tube Nut | 25-35 Newton Meter (Nm) |
| Auxiliary Shaft Cover Bolt | 8-12 Newton Meter (Nm) |
| Water Outlet Connection Bolt | 19-29 Newton Meter (Nm) |
| Cylinder Front Cover Bolt | 8-12 Newton Meter (Nm) |
| Inner Timing Belt Cover Stud | 19-29 Newton Meter (Nm) |
| Outer Timing Belt Cover Bolt | 8-12 Newton Meter (Nm) |
| Thermactor Check Valve to Manifold | 24-27 Newton Meter (Nm) Then rotate into position. |
| Fuel Filter to Carburetor | 9-11 Newton Meter (Nm) |
| Carburetor Mounting Bolts | 19-29 Newton Meter (Nm) |
| Fuel Lines to Pump | 20-24 Newton Meter (Nm) |
| Spark Plugs | 9-20 Newton Meter (Nm) |
| DIS Ignition Module Screws | 2.5-3.5 Newton Meter (Nm) |
| Coil Mounting Bolts | 20-30 Newton Meter (Nm) |
| Crankshaft Hub Bolt | 155-205 Newton Meter (Nm) |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.